1.A female that is sulky and bitches about everything all the time. Heffers tend to blame and insult others. These heffers are commonly overweight. Heffers can become extremely difficult over a period of time.
2. A female cow
3. A pregnant female trying to hide it by saying she's fat.

"wow she is such a heffer! she never stops telling me what im doing wrong, that fat heffer!"
"farmer joe just bought a heffer for only $300!"
"her stomach is looking big lately..she says she is just gaining weight but i think she is really a heffer."